Devices, systems and methods for assessing porous media...

Electricity: measuring and testing – Particle precession resonance – Using well logging device

Reexamination Certificate

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C324S318000

Reexamination Certificate

active

07486070

ABSTRACT:
Certain embodiments are directed to devices, systems and methods for determining a penetration depth of an induced oscillation in a porous medium. In certain examples, the devices, systems and methods are designed to detect a magnetic resonance signal in the presence of an induced oscillatory fluid flow in a porous medium to determine penetration depth of the induced oscillation in the porous medium. In some examples, the mobility of a fluid in the porous medium may be determined from the determined penetration depth.

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patent: 02093126 (2002-11-01), None
Brie et al., “Quantitative Formation Permeability Evaluation from Stoneley Waves”, SPE 49131, Sep. 27-30, 1998.
Denk et al., “Oscillatory Flow in the Cochlea Visualized by a Magnetic Resonance Imaging Technique”, Proc. Natl. Acad. Sci. vol. 90, pp. 1595-1598, Feb. 1993.
Miller et al., “Spin Echo Magnetic Resonance Logging: Porosity and Free Fluid Index Determination”, SPE 20561, Sep. 23-26, 1990.
Looyestijn et al., Permeability determination through NMR detection of acoustically induced fluid oscillation, Magnetic Resonance Imaging, vol. 24, 2006, pp. 1187-1201.

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